Home / 78,034.70-107,687.67-42,225.32

Finding the Fourth Proportional to 78,034.70, 107,687.67 and 42,225.32

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Solution

The fourth proportional to 78,034.70, 107,687.67 and 42,225.32 is: 58,270.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,034.70 : 107,687.67 = 42,225.32 : x
  2. Step 2: Convert to fraction form
    78,034.70/107,687.67 = 42,225.32/x
  3. Step 3: Cross multiply
    78,034.70x = 107,687.67 × 42,225.32
  4. Step 4: Simplify right side
    78,034.70x = 4,547,146,325.80
  5. Step 5: Solve for x
    x = 4,547,146,325.80/78,034.70
  6. Step 6: Final answer
    x = 58,270.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.